NCMystic
Active Member
- Joined
- Apr 19, 2009
- Messages
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Hey guys, got a problem. My car runs like a champ 99% of the time but today my idle started hanging high for the second time. First time i had the serpentine belt on wrong like a dummy because i had bought the car only a couple days earlier and issues occurred that required me to put it back on (threads pulled out of water pump pulley disc and had to re tap threads on the side of the road)
Well today i went for a trip and after getting off the highway exit ramp i noticed my idle handing out at 15-- or so, usually down near 9-- or 1000. stopped and checked the oil and it was low so added a quart of 40 weight, went fine and idled back down for about a mile then the next light started hanging again. by the time i got home is was hanging at nearly 2,000 in idle at the lights (5 speed)
i know all the smog equipment was removed off the car, there is no vacuum equipment, deleted. he builder said it was all plugged on the inside.
what i don't get is what would randomly cause this to happen??? has only occurred after highway cruising and that 1 time i put the belt on wrong which was a month ago. i don't get it.
also when it does this when cruising if you let off the gas at all it want to "buck" a little, not hard but enough to worry the hell out of me. this car is my daily driver, i already have a mystic sitting in the driveway looking sharp and not being able to go anywhere so i really want to take care of this car, only has 4k miles on the motor. .
really worried about this, it's stressing me out pretty bad so i could really use some input from people who know these cars and what they're talking about.
Thank you
here is what has been done to the car
1989 Mustang LX
ENGINE:
-xxx Block bored, honed and decked. Rotating weight 867.0
-1970 Mustang 351 heads bowl cut, 3 angle ported and polished,
gasket matched intake runners and exhaust ported
-Bronze valve guides
-Competition Ultra Light Roller Rockers with matched springs to cam
-Ford Motorsport x-303 cam shaft
-Ported and polished upper intake, matched to lower plenum with tollerences ruduced from factory spec
-ARP rod bolts
-Ford 24lb injectors
-70mm ported and gasket matched throttle body
-70mm mass air meter
-Holly 255 fuel pump
-Holly adjustable fuel regulator
-Shorty headers
-Off-road H pipe
-fresh rebuilt T-5
-Ford Kind Cobra Clutch
-Billet clutch quadrant
-Adjustable UPR clutch cable and firewall adjuster
-Ford 3.55 rear end gear with locker
-Smog equipment delete
-All new gaskets and bearings
-New water and oil pumps
SUSPENSION:
-Caster Camber plate adjusters
-Lower strut brace
-Granatelli adjustable upper control arms
-Summit lower control arms
-BBK front and rear lowering springs
-Sub-frame connectors
Miscellaneous:
-Hurst shifter
-Autometer liquid filled gauges
-New head lamps and tail lamp housings
-Momo steering wheel
Well today i went for a trip and after getting off the highway exit ramp i noticed my idle handing out at 15-- or so, usually down near 9-- or 1000. stopped and checked the oil and it was low so added a quart of 40 weight, went fine and idled back down for about a mile then the next light started hanging again. by the time i got home is was hanging at nearly 2,000 in idle at the lights (5 speed)
i know all the smog equipment was removed off the car, there is no vacuum equipment, deleted. he builder said it was all plugged on the inside.
what i don't get is what would randomly cause this to happen??? has only occurred after highway cruising and that 1 time i put the belt on wrong which was a month ago. i don't get it.
also when it does this when cruising if you let off the gas at all it want to "buck" a little, not hard but enough to worry the hell out of me. this car is my daily driver, i already have a mystic sitting in the driveway looking sharp and not being able to go anywhere so i really want to take care of this car, only has 4k miles on the motor. .
really worried about this, it's stressing me out pretty bad so i could really use some input from people who know these cars and what they're talking about.
Thank you
here is what has been done to the car
1989 Mustang LX
ENGINE:
-xxx Block bored, honed and decked. Rotating weight 867.0
-1970 Mustang 351 heads bowl cut, 3 angle ported and polished,
gasket matched intake runners and exhaust ported
-Bronze valve guides
-Competition Ultra Light Roller Rockers with matched springs to cam
-Ford Motorsport x-303 cam shaft
-Ported and polished upper intake, matched to lower plenum with tollerences ruduced from factory spec
-ARP rod bolts
-Ford 24lb injectors
-70mm ported and gasket matched throttle body
-70mm mass air meter
-Holly 255 fuel pump
-Holly adjustable fuel regulator
-Shorty headers
-Off-road H pipe
-fresh rebuilt T-5
-Ford Kind Cobra Clutch
-Billet clutch quadrant
-Adjustable UPR clutch cable and firewall adjuster
-Ford 3.55 rear end gear with locker
-Smog equipment delete
-All new gaskets and bearings
-New water and oil pumps
SUSPENSION:
-Caster Camber plate adjusters
-Lower strut brace
-Granatelli adjustable upper control arms
-Summit lower control arms
-BBK front and rear lowering springs
-Sub-frame connectors
Miscellaneous:
-Hurst shifter
-Autometer liquid filled gauges
-New head lamps and tail lamp housings
-Momo steering wheel
